Rudarski radovi br 4 2011 - Institut za rudarstvo i metalurgiju Bor

Rearranging the expression for the<br />
stope capacity in drawing, the following<br />
form is obtained:<br />
qvp = (8,5 x d – 8,5) x 0,91 x<br />
1,<br />
75<br />
x (0,62 + ﴿ (t/shift)<br />
d<br />
Calculation of parameter values was<br />
done by computer per mathematical<br />
model, and interdependences of tested<br />
values are shown in tables and diagrams.<br />
1. d = 3, ... , 10m<br />
2. qvn = Fn x g x n,<br />
Fn = 8,5 m 2<br />
3. qvp = (8,5 x d – 8,5) x 0,91 x<br />
1,<br />
75<br />
x (62 + )<br />
d<br />
4. qvob = (qvn + qvp) x 1,5<br />
5. Qvn = 3 x qvn x 264<br />
6. Qvp = 3 x qvp x 264<br />
7. Qvob = 3 x qvob x 264<br />
8. Nvn = 3168<br />
9. Nvp = 3168<br />
10. Nvob = (Nvn + Nvp) x 1,5 = 9504<br />
Q<br />
11. U = vn<br />
vn<br />
Nvn<br />
Q<br />
12. U =<br />
vp<br />
vn<br />
Nvp<br />
Q<br />
13. U =<br />
vob<br />
vob<br />
Nvob<br />
14. N1 = 3 x 264 x 1,5 = 1188<br />
15. N2 = 1188 x n2 s<br />
Table 1. Input data of program for calculation the parameters of pillar stope with DDB<br />
technology<br />
Seam Stope capacity Stope progress - drawing Wages Effect<br />
thickness<br />
d (m)<br />
Shift<br />
qvp(t/shift)<br />
Daily<br />
qvpd (t/v)<br />
Shift<br />
n2s(m/shift)<br />
DAily<br />
n2d(m/d)<br />
In a<br />
shift<br />
Daily<br />
Stope<br />
Up(t/wage)<br />
1 2 3 4 5 6 7 8<br />
3 18.62 55.86 1.20 3.60 4 12 4.65<br />
4 24.54 73.62 1.05 3.17 4 12 6.13<br />
5 30.01 90.03 0.97 2.91 4 12 7.50<br />
6 35.26 105.78 0.91 2.73 4 12 8.81<br />
7 40.38 121.14 0.87 2.61 4 12 10.09<br />
8 45.41 134.84 0.83 2.49 4 12 11.35<br />
9 50.40 151.20 0.81 2.43 4 12 12.60<br />
10 55.34 166.02 0.79 2.38 4 12 13.84<br />
No 4, 2011. 77<br />
MINING ENGINEERING